+++ /dev/null
-From b361015763fedea439f13b336b15ef7bdf1f7d4f Mon Sep 17 00:00:00 2001
-From: Daniel Golle <daniel@makrotopia.org>
-Date: Mon, 3 Apr 2023 02:19:40 +0100
-Subject: [PATCH 12/13] net: dsa: mt7530: introduce driver for MT7988 built-in
- switch
-
-Add driver for the built-in Gigabit Ethernet switch which can be found
-in the MediaTek MT7988 SoC.
-
-The switch shares most of its design with MT7530 and MT7531, but has
-it's registers mapped into the SoCs register space rather than being
-connected externally or internally via MDIO.
-
-Introduce a new platform driver to support that.
-
-Signed-off-by: Daniel Golle <daniel@makrotopia.org>
-Reviewed-by: Andrew Lunn <andrew@lunn.ch>
-Signed-off-by: David S. Miller <davem@davemloft.net>
----
- MAINTAINERS | 2 +
- drivers/net/dsa/Kconfig | 12 +++
- drivers/net/dsa/Makefile | 1 +
- drivers/net/dsa/mt7530-mmio.c | 101 +++++++++++++++++++++++++
- drivers/net/dsa/mt7530.c | 135 +++++++++++++++++++++++++++++++++-
- drivers/net/dsa/mt7530.h | 12 +--
- 6 files changed, 253 insertions(+), 10 deletions(-)
- create mode 100644 drivers/net/dsa/mt7530-mmio.c
-
---- a/MAINTAINERS
-+++ b/MAINTAINERS
-@@ -13058,9 +13058,11 @@ MEDIATEK SWITCH DRIVER
- M: Sean Wang <sean.wang@mediatek.com>
- M: Landen Chao <Landen.Chao@mediatek.com>
- M: DENG Qingfang <dqfext@gmail.com>
-+M: Daniel Golle <daniel@makrotopia.org>
- L: netdev@vger.kernel.org
- S: Maintained
- F: drivers/net/dsa/mt7530-mdio.c
-+F: drivers/net/dsa/mt7530-mmio.c
- F: drivers/net/dsa/mt7530.*
- F: net/dsa/tag_mtk.c
-
---- a/drivers/net/dsa/Kconfig
-+++ b/drivers/net/dsa/Kconfig
-@@ -38,6 +38,7 @@ config NET_DSA_MT7530
- select NET_DSA_TAG_MTK
- select MEDIATEK_GE_PHY
- imply NET_DSA_MT7530_MDIO
-+ imply NET_DSA_MT7530_MMIO
- help
- This enables support for the MediaTek MT7530 and MT7531 Ethernet
- switch chips. Multi-chip module MT7530 in MT7621AT, MT7621DAT,
-@@ -54,6 +55,17 @@ config NET_DSA_MT7530_MDIO
- module MT7530 which can be found in the MT7621AT, MT7621DAT,
- MT7621ST and MT7623AI SoCs.
-
-+config NET_DSA_MT7530_MMIO
-+ tristate "MediaTek MT7530 MMIO interface driver"
-+ depends on NET_DSA_MT7530
-+ depends on HAS_IOMEM
-+ help
-+ This enables support for the built-in Ethernet switch found
-+ in the MediaTek MT7988 SoC.
-+ The switch is a similar design as MT7531, but the switch registers
-+ are directly mapped into the SoCs register space rather than being
-+ accessible via MDIO.
-+
- config NET_DSA_MV88E6060
- tristate "Marvell 88E6060 ethernet switch chip support"
- select NET_DSA_TAG_TRAILER
---- a/drivers/net/dsa/Makefile
-+++ b/drivers/net/dsa/Makefile
-@@ -8,6 +8,7 @@ endif
- obj-$(CONFIG_NET_DSA_LANTIQ_GSWIP) += lantiq_gswip.o
- obj-$(CONFIG_NET_DSA_MT7530) += mt7530.o
- obj-$(CONFIG_NET_DSA_MT7530_MDIO) += mt7530-mdio.o
-+obj-$(CONFIG_NET_DSA_MT7530_MMIO) += mt7530-mmio.o
- obj-$(CONFIG_NET_DSA_MV88E6060) += mv88e6060.o
- obj-$(CONFIG_NET_DSA_RZN1_A5PSW) += rzn1_a5psw.o
- obj-$(CONFIG_NET_DSA_SMSC_LAN9303) += lan9303-core.o
---- /dev/null
-+++ b/drivers/net/dsa/mt7530-mmio.c
-@@ -0,0 +1,101 @@
-+// SPDX-License-Identifier: GPL-2.0-only
-+
-+#include <linux/module.h>
-+#include <linux/of_platform.h>
-+#include <linux/regmap.h>
-+#include <linux/regulator/consumer.h>
-+#include <linux/reset.h>
-+#include <net/dsa.h>
-+
-+#include "mt7530.h"
-+
-+static const struct of_device_id mt7988_of_match[] = {
-+ { .compatible = "mediatek,mt7988-switch", .data = &mt753x_table[ID_MT7988], },
-+ { /* sentinel */ },
-+};
-+MODULE_DEVICE_TABLE(of, mt7988_of_match);
-+
-+static int
-+mt7988_probe(struct platform_device *pdev)
-+{
-+ static struct regmap_config *sw_regmap_config;
-+ struct mt7530_priv *priv;
-+ void __iomem *base_addr;
-+ int ret;
-+
-+ priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
-+ if (!priv)
-+ return -ENOMEM;
-+
-+ priv->bus = NULL;
-+ priv->dev = &pdev->dev;
-+
-+ ret = mt7530_probe_common(priv);
-+ if (ret)
-+ return ret;
-+
-+ priv->rstc = devm_reset_control_get(&pdev->dev, NULL);
-+ if (IS_ERR(priv->rstc)) {
-+ dev_err(&pdev->dev, "Couldn't get our reset line\n");
-+ return PTR_ERR(priv->rstc);
-+ }
-+
-+ base_addr = devm_platform_ioremap_resource(pdev, 0);
-+ if (IS_ERR(base_addr)) {
-+ dev_err(&pdev->dev, "cannot request I/O memory space\n");
-+ return -ENXIO;
-+ }
-+
-+ sw_regmap_config = devm_kzalloc(&pdev->dev, sizeof(*sw_regmap_config), GFP_KERNEL);
-+ if (!sw_regmap_config)
-+ return -ENOMEM;
-+
-+ sw_regmap_config->name = "switch";
-+ sw_regmap_config->reg_bits = 16;
-+ sw_regmap_config->val_bits = 32;
-+ sw_regmap_config->reg_stride = 4;
-+ sw_regmap_config->max_register = MT7530_CREV;
-+ priv->regmap = devm_regmap_init_mmio(&pdev->dev, base_addr, sw_regmap_config);
-+ if (IS_ERR(priv->regmap))
-+ return PTR_ERR(priv->regmap);
-+
-+ return dsa_register_switch(priv->ds);
-+}
-+
-+static int
-+mt7988_remove(struct platform_device *pdev)
-+{
-+ struct mt7530_priv *priv = platform_get_drvdata(pdev);
-+
-+ if (priv)
-+ mt7530_remove_common(priv);
-+
-+ return 0;
-+}
-+
-+static void mt7988_shutdown(struct platform_device *pdev)
-+{
-+ struct mt7530_priv *priv = platform_get_drvdata(pdev);
-+
-+ if (!priv)
-+ return;
-+
-+ dsa_switch_shutdown(priv->ds);
-+
-+ dev_set_drvdata(&pdev->dev, NULL);
-+}
-+
-+static struct platform_driver mt7988_platform_driver = {
-+ .probe = mt7988_probe,
-+ .remove = mt7988_remove,
-+ .shutdown = mt7988_shutdown,
-+ .driver = {
-+ .name = "mt7530-mmio",
-+ .of_match_table = mt7988_of_match,
-+ },
-+};
-+module_platform_driver(mt7988_platform_driver);
-+
-+MODULE_AUTHOR("Daniel Golle <daniel@makrotopia.org>");
-+MODULE_DESCRIPTION("Driver for Mediatek MT7530 Switch (MMIO)");
-+MODULE_LICENSE("GPL");
---- a/drivers/net/dsa/mt7530.c
-+++ b/drivers/net/dsa/mt7530.c
-@@ -2001,6 +2001,47 @@ static const struct irq_domain_ops mt753
- };
-
- static void
-+mt7988_irq_mask(struct irq_data *d)
-+{
-+ struct mt7530_priv *priv = irq_data_get_irq_chip_data(d);
-+
-+ priv->irq_enable &= ~BIT(d->hwirq);
-+ mt7530_mii_write(priv, MT7530_SYS_INT_EN, priv->irq_enable);
-+}
-+
-+static void
-+mt7988_irq_unmask(struct irq_data *d)
-+{
-+ struct mt7530_priv *priv = irq_data_get_irq_chip_data(d);
-+
-+ priv->irq_enable |= BIT(d->hwirq);
-+ mt7530_mii_write(priv, MT7530_SYS_INT_EN, priv->irq_enable);
-+}
-+
-+static struct irq_chip mt7988_irq_chip = {
-+ .name = KBUILD_MODNAME,
-+ .irq_mask = mt7988_irq_mask,
-+ .irq_unmask = mt7988_irq_unmask,
-+};
-+
-+static int
-+mt7988_irq_map(struct irq_domain *domain, unsigned int irq,
-+ irq_hw_number_t hwirq)
-+{
-+ irq_set_chip_data(irq, domain->host_data);
-+ irq_set_chip_and_handler(irq, &mt7988_irq_chip, handle_simple_irq);
-+ irq_set_nested_thread(irq, true);
-+ irq_set_noprobe(irq);
-+
-+ return 0;
-+}
-+
-+static const struct irq_domain_ops mt7988_irq_domain_ops = {
-+ .map = mt7988_irq_map,
-+ .xlate = irq_domain_xlate_onecell,
-+};
-+
-+static void
- mt7530_setup_mdio_irq(struct mt7530_priv *priv)
- {
- struct dsa_switch *ds = priv->ds;
-@@ -2034,8 +2075,15 @@ mt7530_setup_irq(struct mt7530_priv *pri
- return priv->irq ? : -EINVAL;
- }
-
-- priv->irq_domain = irq_domain_add_linear(np, MT7530_NUM_PHYS,
-- &mt7530_irq_domain_ops, priv);
-+ if (priv->id == ID_MT7988)
-+ priv->irq_domain = irq_domain_add_linear(np, MT7530_NUM_PHYS,
-+ &mt7988_irq_domain_ops,
-+ priv);
-+ else
-+ priv->irq_domain = irq_domain_add_linear(np, MT7530_NUM_PHYS,
-+ &mt7530_irq_domain_ops,
-+ priv);
-+
- if (!priv->irq_domain) {
- dev_err(dev, "failed to create IRQ domain\n");
- return -ENOMEM;
-@@ -2534,6 +2582,25 @@ static void mt7531_mac_port_get_caps(str
- }
- }
-
-+static void mt7988_mac_port_get_caps(struct dsa_switch *ds, int port,
-+ struct phylink_config *config)
-+{
-+ phy_interface_zero(config->supported_interfaces);
-+
-+ switch (port) {
-+ case 0 ... 4: /* Internal phy */
-+ __set_bit(PHY_INTERFACE_MODE_INTERNAL,
-+ config->supported_interfaces);
-+ break;
-+
-+ case 6:
-+ __set_bit(PHY_INTERFACE_MODE_INTERNAL,
-+ config->supported_interfaces);
-+ config->mac_capabilities = MAC_ASYM_PAUSE | MAC_SYM_PAUSE |
-+ MAC_10000FD;
-+ }
-+}
-+
- static int
- mt753x_pad_setup(struct dsa_switch *ds, const struct phylink_link_state *state)
- {
-@@ -2610,6 +2677,17 @@ static bool mt753x_is_mac_port(u32 port)
- }
-
- static int
-+mt7988_mac_config(struct dsa_switch *ds, int port, unsigned int mode,
-+ phy_interface_t interface)
-+{
-+ if (dsa_is_cpu_port(ds, port) &&
-+ interface == PHY_INTERFACE_MODE_INTERNAL)
-+ return 0;
-+
-+ return -EINVAL;
-+}
-+
-+static int
- mt7531_mac_config(struct dsa_switch *ds, int port, unsigned int mode,
- phy_interface_t interface)
- {
-@@ -2679,7 +2757,8 @@ mt753x_phylink_mac_config(struct dsa_swi
-
- switch (port) {
- case 0 ... 4: /* Internal phy */
-- if (state->interface != PHY_INTERFACE_MODE_GMII)
-+ if (state->interface != PHY_INTERFACE_MODE_GMII &&
-+ state->interface != PHY_INTERFACE_MODE_INTERNAL)
- goto unsupported;
- break;
- case 5: /* 2nd cpu port with phy of port 0 or 4 / external phy */
-@@ -2757,7 +2836,8 @@ static void mt753x_phylink_mac_link_up(s
- /* MT753x MAC works in 1G full duplex mode for all up-clocked
- * variants.
- */
-- if (interface == PHY_INTERFACE_MODE_TRGMII ||
-+ if (interface == PHY_INTERFACE_MODE_INTERNAL ||
-+ interface == PHY_INTERFACE_MODE_TRGMII ||
- (phy_interface_mode_is_8023z(interface))) {
- speed = SPEED_1000;
- duplex = DUPLEX_FULL;
-@@ -2837,6 +2917,21 @@ mt7531_cpu_port_config(struct dsa_switch
- return 0;
- }
-
-+static int
-+mt7988_cpu_port_config(struct dsa_switch *ds, int port)
-+{
-+ struct mt7530_priv *priv = ds->priv;
-+
-+ mt7530_write(priv, MT7530_PMCR_P(port),
-+ PMCR_CPU_PORT_SETTING(priv->id));
-+
-+ mt753x_phylink_mac_link_up(ds, port, MLO_AN_FIXED,
-+ PHY_INTERFACE_MODE_INTERNAL, NULL,
-+ SPEED_10000, DUPLEX_FULL, true, true);
-+
-+ return 0;
-+}
-+
- static void mt753x_phylink_get_caps(struct dsa_switch *ds, int port,
- struct phylink_config *config)
- {
-@@ -2982,6 +3077,27 @@ static int mt753x_set_mac_eee(struct dsa
- return 0;
- }
-
-+static int mt7988_pad_setup(struct dsa_switch *ds, phy_interface_t interface)
-+{
-+ return 0;
-+}
-+
-+static int mt7988_setup(struct dsa_switch *ds)
-+{
-+ struct mt7530_priv *priv = ds->priv;
-+
-+ /* Reset the switch */
-+ reset_control_assert(priv->rstc);
-+ usleep_range(20, 50);
-+ reset_control_deassert(priv->rstc);
-+ usleep_range(20, 50);
-+
-+ /* Reset the switch PHYs */
-+ mt7530_write(priv, MT7530_SYS_CTRL, SYS_CTRL_PHY_RST);
-+
-+ return mt7531_setup_common(ds);
-+}
-+
- const struct dsa_switch_ops mt7530_switch_ops = {
- .get_tag_protocol = mtk_get_tag_protocol,
- .setup = mt753x_setup,
-@@ -3050,6 +3166,17 @@ const struct mt753x_info mt753x_table[]
- .mac_port_get_caps = mt7531_mac_port_get_caps,
- .mac_port_config = mt7531_mac_config,
- },
-+ [ID_MT7988] = {
-+ .id = ID_MT7988,
-+ .pcs_ops = &mt7530_pcs_ops,
-+ .sw_setup = mt7988_setup,
-+ .phy_read = mt7531_ind_phy_read,
-+ .phy_write = mt7531_ind_phy_write,
-+ .pad_setup = mt7988_pad_setup,
-+ .cpu_port_config = mt7988_cpu_port_config,
-+ .mac_port_get_caps = mt7988_mac_port_get_caps,
-+ .mac_port_config = mt7988_mac_config,
-+ },
- };
- EXPORT_SYMBOL_GPL(mt753x_table);
-
---- a/drivers/net/dsa/mt7530.h
-+++ b/drivers/net/dsa/mt7530.h
-@@ -18,6 +18,7 @@ enum mt753x_id {
- ID_MT7530 = 0,
- ID_MT7621 = 1,
- ID_MT7531 = 2,
-+ ID_MT7988 = 3,
- };
-
- #define NUM_TRGMII_CTRL 5
-@@ -54,11 +55,11 @@ enum mt753x_id {
- #define MT7531_MIRROR_PORT_SET(x) (((x) & MIRROR_MASK) << 16)
- #define MT7531_CPU_PMAP_MASK GENMASK(7, 0)
-
--#define MT753X_MIRROR_REG(id) (((id) == ID_MT7531) ? \
-+#define MT753X_MIRROR_REG(id) ((((id) == ID_MT7531) || ((id) == ID_MT7988)) ? \
- MT7531_CFC : MT7530_MFC)
--#define MT753X_MIRROR_EN(id) (((id) == ID_MT7531) ? \
-+#define MT753X_MIRROR_EN(id) ((((id) == ID_MT7531) || ((id) == ID_MT7988)) ? \
- MT7531_MIRROR_EN : MIRROR_EN)
--#define MT753X_MIRROR_MASK(id) (((id) == ID_MT7531) ? \
-+#define MT753X_MIRROR_MASK(id) ((((id) == ID_MT7531) || ((id) == ID_MT7988)) ? \
- MT7531_MIRROR_MASK : MIRROR_MASK)
-
- /* Registers for BPDU and PAE frame control*/
-@@ -300,9 +301,8 @@ enum mt7530_vlan_port_acc_frm {
- MT7531_FORCE_DPX | \
- MT7531_FORCE_RX_FC | \
- MT7531_FORCE_TX_FC)
--#define PMCR_FORCE_MODE_ID(id) (((id) == ID_MT7531) ? \
-- MT7531_FORCE_MODE : \
-- PMCR_FORCE_MODE)
-+#define PMCR_FORCE_MODE_ID(id) ((((id) == ID_MT7531) || ((id) == ID_MT7988)) ? \
-+ MT7531_FORCE_MODE : PMCR_FORCE_MODE)
- #define PMCR_LINK_SETTINGS_MASK (PMCR_TX_EN | PMCR_FORCE_SPEED_1000 | \
- PMCR_RX_EN | PMCR_FORCE_SPEED_100 | \
- PMCR_TX_FC_EN | PMCR_RX_FC_EN | \
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